III. Examples of application areas: 1. Battery management system: Applicable to charging and discharging protection modules in battery management systems such as mobile devices and electric vehicles, which can improve battery safety and life. 2. Power switch control: As a negative voltage field effect transistor, it can be used in power management and switch control modules such as DC-DC converters, chargers and inverters to achieve efficient energy consumption control. 3. Motor drive: Used for switch control of motors and electric motors, such as small household appliances, automotive motors, etc., to achieve precise drive control and energy saving effects. 4. LED lighting control: Applicable to switch control in LED lighting systems, which can achieve light brightness adjustment and energy saving management.